Remove sections from custom tools in Acrobat

I'm creating some custom tool sets in Acrobat. I've created sections to divide the tools within the set, but now I want to remove one of the sections. I can delete items from the section, but there is no option to delete the section itself. In the attached example I want to remove the section PitStop View, but as you can see the trash can is greyed out. Is this possible or do I have to rebuild my entire tool set just to remove an unneeded section? Thanks for any Tips!